The mu TPC method: improving the position resolution of neutron detectors based on MPGDs

Dorothea Pfeiffer, F. Resnati, J. Birch, Richard Hall-Wilton, Carina Höglund, L. Hultman, G. Iakovidis, E. Oliveri, Esko Oksanen, L. Ropelewski, P. Thuiner

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Due to the He-3 crisis, alternatives to the standard neutron detection techniques are becoming urgent. In addition, the instruments of the European Spallation Source (ESS) require advances in the state of the art of neutron detection. The instruments need detectors with excellent neutron detection efficiency, high rate capabilities and unprecedented spatial resolution. The Macromolecular Crystallography instrument (NMX) requires a position resolution in the order of 200 mu m over a wide angular range of incoming neutrons. Solid converters in combination with Micro Pattern Gaseous Detectors (MPGDs) are proposed to meet the new requirements. Charged particles rising from the neutron capture have usually ranges larger than several millimetres in gas. This is apparently in contrast with the requirements for the position resolution. In this paper, we present an analysis technique, new in the field of neutron detection, based on the Time Projection Chamber (TPC) concept. Using a standard Single-GEM with the cathode coated with (B4C)-B-10, we extract the neutron interaction point with a resolution of better than sigma = 200 mu m.
    Original languageEnglish
    Article numberP04004
    JournalJournal of Instrumentation
    Volume10
    DOIs
    Publication statusPublished - 2015

    Subject classification (UKÄ)

    • Physical Sciences

    Free keywords

    • THGEM
    • GEM
    • Micropattern gaseous detectors (MSGC
    • Particle tracking detectors
    • Time projection Chambers (TPC)
    • RETHGEM
    • MHSP
    • MICROPIC
    • MICROMEGAS
    • InGrid
    • etc)
    • Neutron detectors (cold
    • thermal
    • fast neutrons)

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